Action 57. Starter of the engine
Unscrew the screws (1) and remove the
cover (2).
Check the condition of the commutator (3),
brushes (5) and springs (4).
Make sure of free brush movement. The
brush pressure on the commutator surface
shall be within 0.75-1.00 kgf. Otherwise, re-
place the brush holder as an assembly.
In case of considerable wear or burning of
the commutator surface, send the starter to
the repair shop.
General maintenance
Action 58. Adjusting the drain valve of
the centrifugal oil filter of the engine
(except for MTZ-
900.3/920.3/950.3/952.3)
If during the engine operation within the
rated mode at normal temperature (80-
100°C), the oil pressure has dropped be-
low 0.1 MPa, stop the engine and elimi-
nate the defect.
One of the ways to increase pressure is
readjustment of the centrifuge drain
valve. To do this, remove the thread
plug (not shown) and readjust oil pres-
sure by screwing the adjustment screw
(1) with a screw-driver into the body. If
this method does not eliminate the de-
fect, contact the dealer.
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